Functions of melatonin in plants: a review

@article{Arnao2015FunctionsOM,
  title={Functions of melatonin in plants: a review},
  author={Marino Ba{\~n}{\'o}n Arnao and Josefa Hern{\'a}ndez-Ruiz},
  journal={Journal of Pineal Research},
  year={2015},
  volume={59}
}
The number of studies on melatonin in plants has increased significantly in recent years. This molecule, with a large set of functions in animals, has also shown great potential in plant physiology. This review outlines the main functions of melatonin in the physiology of higher plants. Its role as antistress agent against abiotic stressors, such as drought, salinity, low and high ambient temperatures, UV radiation and toxic chemicals, is analyzed. The latest data on their role in plant… 

Agricultural Crops

Melatonin is an indoleamine present in animals and other organisms. Its main function in animals where it acts as a hormone regulating circadian rhythms related processes is well established. It was

Melatonin and its relationship to plant hormones

Melatonin is an important modulator of gene expression related to plant hormones, e.g. in auxin carrier proteins, as well as in metabolism of indole-3-acetic acid (IAA), gibberellins, cytokinins, abscisic acid and ethylene.

Prospective Role of Melatonin in Signaling and Alleviation of Stress in Plants

This chapter will provide valuable information on melatonin-mediated stress signaling and deduce its role in mitigation of abiotic and biotic stresses in plants.

Melatonin: a master regulator of plant development and stress responses.

The biosynthesis of melatonin from tryptophan is described, as well as its various degradation pathways in plants, and it is proposed that melatonin is a master regulator in plants.

Phytomelatonin: An overview of the importance and mediating functions of melatonin against environmental stresses.

Melatonin is a natural bio-stimulant that creates resistance in field crops against various abiotic stress, including heat, chemical pollutants, cold, drought, salinity, and harmful ultra-violet radiation.

Phytomelatonin, an Interesting Tool for Agricultural Crops

Plant melatonin appears to have developed a type of hormonal function, similar to that observed for other plant hormones, such as auxin, to induce growth in stems and stimulate rooting and to delay senescence by protecting photosynthetic systems and processes.

Melatonin in plant morphogenesis

The potential for use of melatonin in several in vitro systems, the roles it plays in plant morphogenesis, and the importance ofmelatonin in communication within and between plants are highlighted, and how in vitro system exploitation can be exploited to better understand these understudied functions ofMelatonin are highlighted.

Melatonin: Current Status and Future Perspectives in Plant Science

This review has identified many new aspects where melatonin may have possible roles in plants, for example, its function in improving the storage life and quality of fruits and vegetables, its role in vascular reconnection during the grafting process and nutrient uptake from roots by modifying root architecture.

Melatonin as a Possible Natural Safener in Crops

This review raises the possible use of melatonin as a natural safener in herbicide treatments and a similar role is suggested in the co-action between fungicides and melatonin, where a synergistic response has been demonstrated in some cases.
...

References

SHOWING 1-10 OF 165 REFERENCES

Functional roles of melatonin in plants, and perspectives in nutritional and agricultural science.

Evidence indicates that melatonin has an ability to increase the production of crops and may involve the roles of melatonin in preservation of chlorophyll, promotion of photosynthesis, and stimulation of root development.

Melatonin: A potential regulator of plant growth and development?

There is no known specific role for melatonin in plant physiology, but growing information describing melatonin control of physiological processes in mammals, yeast, and bacteria, including diurnal responses, detoxification of free radicals, and environmental adaptations.

Growth conditions influence the melatonin content of tomato plants.

Melatonin in plant organs

The melatonin content of the fruits generally increased during ripening up to the mature ripe stage and thereafter as the fruit became over ripe, as it does in many animals.

Phytomelatonin: a review.

A detailed summary of the investigations that have been performed to date in the plant melatonin (phytomelatonin) field is presented to bring the reader up to date on what is known about melatonin in plants.

Lowering intercellular melatonin levels by transgenic analysis of indoleamine 2,3‐dioxygenase from rice in tomato plants

The results suggest the involvement of IDO in plant melatonin metabolism and a possible role in plant leaf development.

Phytomelatonin: Discovery, Content, and Role in Plants

Its ability to strengthen plants subjected to abiotic stress such as drought, cold, heat, salinity, chemical pollutants, herbicides, and UV radiation makes melatonin an interesting candidate for use as a natural biostimulating substance for treating field crops.

Phytomelatonin: Assisting Plants to Survive and Thrive

This review summarizes the advances that have been made in terms of the identified functions of melatonin in plants and calls for scientists to join the endeavor of clarifying the function of this phylogenetically-ancient molecule in plants, particularly in reference to the mechanisms by which melatonin mediates its multiple actions.

The Physiological Function of Melatonin in Plants

The common biosynthetic pathways shared by the auxin, indole-3-acetic, and melatonin, which suggest a possible coordinated regulation in plants, are presented.

Growth conditions determine different melatonin levels in Lupinus albus L

Melatonin biosynthesis is upregulated in common stress situations, in which it may serve as a signal molecule and/or as a direct antistress agent due to its well‐known antioxidative properties.
...